package com.mars.util;

import org.apache.commons.lang3.StringUtils;

/**
 * 对层级的管理
 * @author MARS
 * @date 2017/12/28
 */
public class LevelUtil {

    public final static String SEPARATOR = ".";

    public final static String ROOT = "0";

    public static String calculateLevel(String parentLevel,int parentId){
        if(StringUtils.isBlank(parentLevel)){
            return ROOT;
        } else {
            return StringUtils.join(parentLevel,SEPARATOR,parentId);
        }
    }
}
